<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      let name = 'John';
      function sayHi() {
        console.log('Hi, ' + name);
      }
      name = 'Pete';
      sayHi(); // "Pete"？
    </script>
  </body>
</html>
